Donald Trump ominously predicted that a failure to “repeal and replace” Obamacare “will destroy American health care forever” at a Tuesday in Valley Forge, Pennsylvania.

The Republican nominee said that if elected, he would convene a special session of Congress to undo President Barack Obama’s signature healthcare legislation “very, very quickly.”

Trump’s list of criticisms of the existing law include rising premiums, “fleeing” insurance companies, “frozen” hiring and “workers’ hours being cut.”

Hillary Clinton, Trump said, would expand the legislation “and make it even more expensive.”

“She wants to put the government totally in charge of health care in America,” Trump said.

Trump spent far less time outlining his own health care plan, offering up a few sentences about providing health savings accounts and a nationwide insurance market, as well as allowing states to manage Medicaid dollars.

“It will be a much better health care at a much less cost,” Trump assured the Valley Forge audience.

Only six minutes of Trump’s brief, 21-minute address, billed as a speech on Obamacare, actually touched on healthcare legislation. Trump’s running mate Mike Pence provided more detail in his own opening remarks, but Trump pivoted early on to his “plan for other things” including bringing back manufacturing jobs, sealing off U.S. borders and revitalizing “the inner cities.”